when I was a kid there was a really good programme entitled'Call The Gun Expert'

it was a documentary series about the early days of forensics, particularly a man who's name I can't rememember, who used science to solve crimes involving guns. It was hosted by McDonald Hastings.

One murder he investigated which was never solved was committed in Featherstone in the 1920s and never solved.I was rapt.

It occured on the stacks which occupied the site where Linpac now is, where the aketon road joins wakefield road and goes over a bridge.The crime wasn't commited by a 'normal' gun, but a home made weapon with a home made bullet. The gun was called (I think) a bipe pump gun, and resembled one of those metal snooker cue cases. The bullet was inserted and air pumped into the weapon via a valve. the pressure inside gave the gun its power.I know I didn't imagine this. has anyone else heard of it?